My computer is a lenovo thinkpad T510 .I followed the instructions given in this post but after installation, For Ubuntu 16.04 or greater:
sudo apt install libpam-fprintd
I tried to run it, but:
$ fprint_demo
The program 'fprint_demo' is currently not installed.
You can install it by typing: sudo apt install fprint-demo
$ fprint_enroll
fprint_enroll: command not found
What am I missing to make my fingerprint work?